Rod body locking handle

Abstract

The embodiment of the invention provides a rod body locking handle, the rod body locking handle has a locking state and an unlocking state which can be mutually converted, the rod body locking handle comprises an outer sleeve and an inner sleeve, the outer sleeve is provided with a containing cavity and an insertion hole for a rod body to penetrate through, the inner sleeve is rotatably arranged in the containing cavity along the central axis of the inner sleeve, and the inner sleeve is provided with a locking position and an unlocking position which can be mutually converted. The hole wall of the containing cavity comprises an abutting area and a containing area which are sequentially arranged in the circumferential direction of the containing cavity, the distance between the abutting area and the central axis is a, the distance between the containing area and the central axis is b, and a is smaller than b; the inner sleeve is provided with a clamping part for clamping the rod body, in the locking state, the inner sleeve abuts against the abutting area and can clamp the rod body, and in the unlocking state, the inner sleeve corresponds to the containing area in the radial direction of the containing cavity and can unlock the rod body. Therefore, the rod body locking handle provided by the embodiment of the invention has the advantages of simple structure and convenience in operation.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a rod locking handle. Background Art

[0002] Medical rod locking handles are mainly used in medical equipment. Its main function is to provide a reliable mechanism to fix and adjust the position of medical devices or their components, ensuring that the medical equipment or its components can be firmly held in the required position after being adjusted to prevent unnecessary movement. Such handles are usually used in occasions where precise control and stability are required. Currently, most rod locking handles can only lock products of a single specification. Although a few rod locking handles can lock rod-shaped products of multiple specifications, they are relatively bulky and have a complex internal structure, greatly increasing the product processing cost. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent. For this purpose, an embodiment of the present invention provides a rod locking handle. The rod locking handle has the advantages of simple structure and convenient operation.

[0004] The rod locking handle according to an embodiment of the present invention includes an outer sleeve and an inner sleeve. The outer sleeve has a receiving cavity and an insertion hole for a rod to pass through. The inner sleeve is rotatably disposed in the receiving cavity along its central axis. The wall of the receiving cavity includes an abutting area and a receiving area arranged in sequence along the circumferential direction of the receiving cavity. The distance between the abutting area and the central axis is a, and the distance between the receiving area and the central axis is b, where a is less than b. The inner sleeve has a clamping portion for clamping the rod. In the locked state, the inner sleeve abuts against the abutting area and can clamp the rod. In the unlocked state, the inner sleeve corresponds to the receiving area in the radial direction of the receiving cavity and can unlock the rod.

[0005] For the rod locking handle according to an embodiment of the present invention, by dividing the wall of the receiving cavity into an abutting area and a receiving area arranged in sequence along the circumferential direction of the receiving cavity and controlling the different distances between the receiving area and the abutting area and the central axis of the inner sleeve, clamping and unlocking of the rod can be achieved when the inner sleeve is rotated. Thus, the rod locking handle with such a structure has a simple structure and good operation convenience.

[0006] Therefore, the rod locking handle according to an embodiment of the present invention has the advantages of simple structure and convenient operation.

[0007] In some embodiments, the outer sleeve includes an outer sleeve body and a plug. The outer sleeve body has an opening communicating with the receiving cavity. The plug is detachably disposed on the opening. The inner wall surface of the outer sleeve body has the abutting area and the receiving area. The plug is provided with the insertion hole. The inner sleeve is limited in the receiving cavity through the plug.

[0008] In some embodiments, the material of the inner sleeve is polytetrafluoroethylene.

[0009] In some embodiments, the accommodating cavity of the outer sleeve body is divided into a plugging cavity section and a fitting cavity section along the extending direction of the central axis, and the projection of the inner contour of the fitting cavity section falls within the projection of the inner contour of the plugging cavity section. The plug body is plugged in the plugging cavity section, the clamping portion is arranged in the fitting cavity section, and the abutting area and the receiving area are formed on the inner wall surface of the fitting cavity section.

[0010] In some embodiments, the cross-section of the fitting cavity section decreases from the cavity bottom to the direction of the insertion hole, and the distance from the outer wall surface of the clamping portion of the inner sleeve to the central axis decreases from the cavity bottom to the direction of the insertion hole. In the locked state, the outer wall surface of the clamping portion of the inner sleeve can abut against the abutting area of the fitting cavity section.

[0011] In other embodiments, the fitting cavity section sequentially includes a second segment and a first segment arranged coaxially from the cavity bottom to the direction of the insertion hole, and the cross-section of the first segment is larger than that of the second segment to form a stepped surface between the first segment and the second segment. The distance from the outer contour of the clamping portion of the inner sleeve to the central axis increases from the cavity bottom to the direction of the insertion hole. In the locked state, the outer wall surface of the clamping portion of the inner sleeve can abut against the abutting area of the first segment and / or the second segment.

[0012] In some embodiments, the cross-section of the fitting cavity section is polygonal, and the receiving area is formed at the corner portion of each fitting cavity section, and the abutting area is formed at the side portion of each fitting cavity section.

[0013] In some embodiments, the cross-section of the insertion hole is smaller than that of the accommodating cavity, a step is formed between the insertion hole and the accommodating cavity, and one end of the inner sleeve abuts against the plug body.

[0014] In other embodiments, a limiting protrusion extending towards the inside of the hole is provided on the inner wall surface of the insertion hole. Along the extending direction of the central axis, the projection of the limiting protrusion coincides with the projection of the inner sleeve, and one end of the inner sleeve abuts against the limiting protrusion.

[0015] In some embodiments, the plug body includes a cover body portion and a plug body portion formed on one side of the cover body portion. The plug body portion extends along the thickness direction of the cover body portion. The cover body portion abuts against the open end of the outer sleeve body, the plug body portion is detachably connected to the wall surface of the accommodating cavity, and the insertion hole is formed on the cover body portion and the plug body portion.

[0016] In some embodiments, the inner sleeve includes an inner sleeve body and a limit pin. A clamping groove is provided on the inner sleeve body. A section of the inner sleeve body having the clamping groove forms the clamping portion. The limit pin is rotatably clamped in the clamping groove, and a part of the limit pin protrudes radially outside the inner sleeve body. The clamping portion is formed on the inner sleeve body. The limit pin is selectively abutted against the abutting area and the receiving area, so as to change the rod body locking handle between the locked state and the unlocked state.

[0017] In some embodiments, the inner sleeve body includes a sleeve and a plurality of claws spaced apart from each other and arranged at one end of the sleeve. The area between the plurality of claws forms the clamping portion, and the clamping groove is formed between two adjacent claws. The limit pin is movably clamped in the clamping groove along the radial direction of the inner sleeve.

[0018] In some embodiments, the accommodating cavity of the outer sleeve has a fitting cavity section that decreases in the direction from the cavity bottom to the insertion hole. Along the extending direction of the central axis, the cross-section of the inner sleeve body increases in the direction from the cavity bottom to the insertion hole, and the cross-section of the limit pin decreases in the direction from the cavity bottom to the insertion hole.

[0019] In some other embodiments, the accommodating cavity of the outer sleeve has a fitting cavity section. The fitting cavity section includes a first section and a second section arranged coaxially. The inner sleeve body includes a first sleeve body section and a second sleeve body section. The claws are provided on the first sleeve body section and the second sleeve body section. The cross-section of the first section is larger than that of the second section, and the cross-section of the first sleeve body section is larger than that of the second sleeve body section. The limit pin includes a separately provided first pin body and a second pin body. The first pin body is clamped in the clamping groove of the first sleeve body section, and the second pin body is clamped in the clamping groove of the second sleeve body section.

[0020] In some embodiments, the abutting area and the receiving area are smoothly provided with an anti-slip wall. The distance between the anti-slip wall and the central axis is c, and b > c > a.

[0021] In some other embodiments, the abutting area and the receiving area are smoothly connected. Description of the Drawings

[0022] Figure 1 is a cross-sectional view of the rod body locking handle and the rod body in cooperation according to an embodiment of the present invention;

[0023] Figure 2 is a cross-sectional view of the rod body locking handle according to an embodiment of the present invention;

[0024] Figure 3 is a perspective view of the outer sleeve body according to an embodiment of the present invention;

[0025] Figure 4It is a cross-sectional view of the outer casing of an embodiment of the present invention;

[0026] Figure 5 It is a top view of the outer casing of an embodiment of the present invention;

[0027] Figure 6 It is a perspective view of the inner sleeve of an embodiment of the present invention;

[0028] Figure 7 It is a perspective view of the inner casing of an embodiment of the present invention;

[0029] Figure 8 It is a front view of the inner casing of an embodiment of the present invention;

[0030] Figure 9 It is a top view of the inner casing of an embodiment of the present invention;

[0031] Figure 10 It is a front view of the limit pin of an embodiment of the present invention;

[0032] Figure 11 It is a cross-sectional view of the rod locking handle and the rod in another embodiment of the present invention;

[0033] Figure 12 It is a cross-sectional view of the rod locking handle in another embodiment of the present invention;

[0034] Figure 13 It is a perspective view of the outer casing in another embodiment of the present invention;

[0035] Figure 14 It is a cross-sectional view of the outer casing in another embodiment of the present invention;

[0036] Figure 15 It is a top view of the outer casing in another embodiment of the present invention;

[0037] Figure 16 It is a perspective view of the plug body in another embodiment of the present invention;

[0038] Figure 17 It is a perspective view of the inner sleeve in another embodiment of the present invention;

[0039] Figure 18 It is a perspective view of the inner casing in another embodiment of the present invention;

[0040] Figure 19 It is a front view of the inner casing in another embodiment of the present invention;

[0041] Figure 20 It is a top view of the inner casing in another embodiment of the present invention;

[0042] Figure 21It is the front view of the limit pin of another embodiment of the present invention.

[0043] Reference numerals:

[0044] Rod body locking handle 100; rod body 200;

[0045] Outer sleeve 1; outer sleeve body 11; receiving cavity 111; abutting area 112; receiving area 113; sealing cavity section 114; mating cavity section 115; first segment 1151; second segment 1152;

[0046] Plug body 12; cover body part 121; plug body part 122; insertion hole 123;

[0047] Inner sleeve 2; inner sleeve body 21; card slot 211; clamping jaw 212; limit pin 22. Detailed implementation manners

[0048] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0049] Embodiment 1:

[0050] The following refers to Figures 1 - 10 to describe the rod body locking handle 100 of Embodiment 1 of the present invention. The rod body locking handle 100 has a lock state and an unlock state that can be mutually converted.

[0051] As Figures 1 - 10 shown, the rod body locking handle 100 of Embodiment 1 of the present invention includes an outer sleeve 1 and an inner sleeve 2. The outer sleeve 1 has a receiving cavity 111 and an insertion hole 123 for the rod body 200 to penetrate. The inner sleeve 2 is rotatably arranged in the receiving cavity 111 along its central axis. The hole wall of the receiving cavity 111 includes an abutting area 112 and a receiving area 113 arranged in sequence along the circumferential direction of the receiving cavity 111. The distance between the abutting area 112 and the central axis is a, and the distance between the receiving area 113 and the central axis is b, and a is less than b; the inner sleeve 2 has a clamping portion for clamping the rod body 200. In the lock state, the inner sleeve 2 abuts against the abutting area 112 and can clamp the rod body 200. In the unlock state, the inner sleeve 2 corresponds to the receiving area 113 in the radial direction of the receiving cavity 111 and can unlock the rod body 200.

[0052] For the rod body locking handle 100 of Embodiment 1 of the present invention, by dividing the hole wall of the receiving cavity 111 into an abutting area 112 and a receiving area 113 arranged in sequence along the circumferential direction of the receiving cavity 111 and controlling the different distances between the receiving area 113 and the abutting area 112 and the central axis of the inner sleeve 2, clamping and unlocking of the rod body 200 can be achieved when the inner sleeve 2 is rotated. Thus, the rod body locking handle 100 with this structure has a simple structure and good operation convenience.

[0053] Therefore, the rod locking handle 100 of Embodiment 1 of the present invention has the advantages of simple structure and convenient operation.

[0054] As Figures 1 to 4 shown, the outer sleeve 1 includes an outer sleeve body 11 and a plug body 12. The outer sleeve body 11 has an opening communicating with the accommodating cavity 111. The plug body 12 is detachably arranged on the opening. The inner wall surface of the outer sleeve body 11 has an abutting area 112 and a receiving area 113. An insertion hole 123 is provided on the plug body 12. The inner sleeve 2 is limited in the accommodating cavity 111 through the plug body 12.

[0055] For the rod locking handle 100 of Embodiment 1 of the present invention, by dividing the outer sleeve 1 into the outer sleeve body 11 and the plug body 12 and detachably arranging the plug body 12 on the opening of the outer sleeve body 11, when assembling the rod locking handle 100, the inner sleeve 2 can be placed in the accommodating cavity 111 through the opening, and then the inner sleeve 2 can be limited in the accommodating cavity 111 through the plug body 12 to complete the assembly of the locking handle. When in use, the rod 200 is inserted into the clamping portion of the inner sleeve 2 for fixation, and the inner sleeve 2 can be rotated from the receiving area 113 to the abutting area 112 by rotating the rod 200. Thus, the installation convenience is further improved. In addition, since the plug body 12 is detachably arranged on the opening of the outer sleeve body 11, it is convenient to perform thorough disinfection operations on the outer sleeve 1 and the inner sleeve 2.

[0056] Optionally, the material of the inner sleeve 2 can be polytetrafluoroethylene. The inner sleeve 2 made of this material is relatively soft in texture, can achieve soft contact with the outer sleeve 1, and is not likely to cause wear to the outer sleeve 1 during use. Thus, it helps to extend the service life of the rod locking handle 100.

[0057] As Figures 1 to 4 shown, the accommodating cavity 111 of the outer sleeve body 11 is divided into a plugging cavity section 114 and a fitting cavity section 115 along the extending direction of the central axis. And along the extending direction of the central axis, the projection of the inner contour of the fitting cavity section 115 falls within the projection of the inner contour of the plugging cavity section 114. The plug body 12 plugs in the plugging cavity section 114, the clamping portion is arranged in the fitting cavity section 115, and the abutting area 112 and the receiving area 113 are formed on the inner wall surface of the fitting cavity section 115. It can be understood that the cavity diameter of the fitting cavity section 115 is less than or equal to that of the plugging cavity section 114.

[0058] The rod body locking handle 100 of Embodiment 1 of the present invention divides the accommodation cavity 111 of the outer sleeve 11 into a plugging cavity section 114 and a fitting cavity section 115, and the projection of the inner contour of the fitting cavity section 115 falls within the projection of the inner contour of the plugging cavity section 114, enabling the inner sleeve 2 to be smoothly installed into the fitting cavity section 115 to achieve the installation of the inner sleeve 2. Thus, the rod body locking handle 100 has the advantage of good installation convenience. At the same time, it avoids the problem that the overall size of the locking handle is too large due to the over-large volume of the fitting cavity section 115.

[0059] Optionally, the opening formed on the plugging cavity section 114 is generally circular, and the plug body 12 is also generally in the structure of a circular sealing plate.

[0060] As Figure 1 and Figure 2 shown, the cross-section of the insertion hole 123 is smaller than the cross-section of the accommodation cavity 111, a step is formed between the insertion hole 123 and the accommodation cavity 111, and one end of the inner sleeve 2 abuts against the plug body 12. That is to say, the inner sleeve 2 is limited by the plug body 12.

[0061] For the rod body locking handle 100 of Embodiment 1 of the present invention, a step is formed between the insertion hole 123 and the accommodation cavity 111, and one end of the inner sleeve 2 abuts against the plug body 12, thereby forming a limit on the inner sleeve 2 and preventing the problem that the inner sleeve 2 slips out of the accommodation cavity 111.

[0062] Embodiment 1 of the present invention is not limited thereto. For example, in other embodiments, a limiting protrusion extending towards the inside of the hole is provided on the inner wall surface of the insertion hole 123. Along the extending direction of the central axis, the projection of the limiting protrusion coincides with the projection of the inner sleeve 2, and one end of the inner sleeve 2 abuts against the limiting protrusion. Similarly, the inner sleeve 2 can be limited by the limiting protrusion, and this structure has the advantages of material reduction and weight reduction compared with the solid ring plate structure.

[0063] As Figure 1 and Figure 2 shown, the plug body 12 includes a cover body portion 121 and a plug body portion 122 formed on one side of the cover body portion 121. The plug body portion 122 extends along the thickness direction of the cover body portion 121. The cover body portion 121 abuts against the end of the outer sleeve 11 with an opening, and the plug body portion 122 is detachably connected to the wall surface of the accommodation cavity 111. The insertion hole 123 is formed on the cover body portion 121 and the plug body portion 122.

[0064] For the rod body locking handle 100 of Embodiment 1 of the present invention, by dividing the plug body 12 into a cover body portion 121 and a plug body portion 122 formed on one side of the cover body portion 121, an outer wall surface of each of the plug body portion 122 and the cover body portion 121 can form a connection surface with the outer sleeve 11, ensuring the stability of the connection.

[0065] Optionally, an external thread may be provided on the outer peripheral surface of the plug body portion 122, and an internal thread is provided on the portion of the receiving cavity 111 that cooperates with the plug body portion 122, and the plug body portion 122 is in threaded engagement with the outer sleeve body 11. Further, the plug body portion 122 is in threaded engagement with the plugging cavity section 114. To further enhance the firmness of the fit between the plug body 12 and the outer sleeve body 11, the cover body portion 121 may be welded or adhesively fixed to the end of the outer sleeve body 11.

[0066] As Figures 1 to 4 shown, the cross-section of the mating cavity section 115 decreases in the direction from the cavity bottom to the insertion hole 123, and the distance from the outer wall surface of the clamping portion of the inner sleeve 2 to the central axis decreases in the direction from the cavity bottom to the insertion hole 123. In the locked state, the outer wall surface of the clamping portion of the inner sleeve 2 can abut against the abutting area 112 of the mating cavity section 115.

[0067] For the rod locking handle 100 of Embodiment 1 of the present invention, by reducing the cross-section of the mating cavity section 115 in the direction from the cavity bottom to the insertion hole 123 and reducing the distance from the outer wall surface of the clamping portion of the inner sleeve 2 to the central axis in the direction from the cavity bottom to the insertion hole 123, it is possible to ensure that a surface-to-surface fit is formed between the inner sleeve 2 and the wall surface of the mating cavity section 115. Thus, the rod locking handle 100 of Embodiment 1 of the present invention has the advantage of good structural stability.

[0068] As Figure 3 and Figure 5 shown, the cross-section of the mating cavity section 115 is polygonal, and a receiving area 113 is formed at each corner portion of each mating cavity section 115, and an abutting area 112 is formed at each side portion of each mating cavity section 115.

[0069] For the rod locking handle 100 of Embodiment 1 of the present invention, by setting the cross-section of the mating cavity section 115 to be polygonal, a receiving area 113 is formed at each corner portion of the mating cavity section 115, and an abutting area 112 is formed at each side portion of each mating cavity section 115, it thus has the advantages of simple structure and good stability.

[0070] Optionally, the cross-section of the mating cavity section 115 may be generally triangular, quadrilateral or pentagonal, and thus there may also be multiple abutting areas 112 and receiving areas 113. For example, the cross-section of the mating cavity section 115 may be generally triangular, and the number of the corresponding abutting areas 112 and receiving areas 113 is three. Providing multiple abutting areas 112 can abut against multiple sites of the inner sleeve 2. Thus, the firmness of the structure is further enhanced.

[0071] As Figures 6 to 8As shown, the inner sleeve 2 includes an inner sleeve body 21 and a limit pin 22. A clamping groove 211 is provided on the inner sleeve body 21. A section of the inner sleeve body 21 with the clamping groove 211 forms a clamping portion. The limit pin 22 is rotatably clamped in the clamping groove 211, and a part of the limit pin 22 protrudes radially outside the inner sleeve body 21. The clamping portion is formed on the inner sleeve body 21. The limit pin 22 is switchably abutted against the abutting area 112 and the receiving area 113, so that the rod body locking handle 100 is changed between a locked state and an unlocked state.

[0072] In the rod body locking handle 100 according to Embodiment 1 of the present invention, by dividing the inner sleeve 2 into an inner sleeve body 21 and a limit pin 22, and rotatably clamping the limit pin 22 in the clamping groove 211, and a part of the limit pin 22 protrudes radially outside the inner sleeve body 21. Furthermore, in the locked state, the abutment of the inner sleeve 2 against the abutting area 112 realizes the locking of the rod body 200. Furthermore, during the process of the rod body locking handle 100 changing between the locked state and the unlocked state, the relative sliding fit improves the smoothness of the change and avoids the problem of jamming during the rotation of the inner sleeve 2.

[0073] Optionally, the number of the limit pins 22 can be matched with the number of the abutting area 112 and the receiving area 113.

[0074] As Figures 6 to 8 shown, the inner sleeve body 21 includes a sleeve and a plurality of spaced claws 212 provided at one end of the sleeve. The area between the plurality of claws 212 forms a clamping portion, and a clamping groove 211 is formed between two adjacent claws 212. The limit pin 22 is movably clamped in the clamping groove 211 along the radial direction of the inner sleeve 2.

[0075] In the rod body locking handle 100 according to Embodiment 1 of the present invention, by dividing the inner sleeve body 21 into a sleeve and a plurality of spaced claws 212 provided at one end of the sleeve, a clamping groove 211 for placing the limit pin 22 is formed between two adjacent claws 212. Thus, the rod body locking handle 100 according to Embodiment 1 of the present invention has the advantages of simple structure and high processing convenience. During use, the rod body 200 (rod-shaped workpiece) is inserted onto the inner sleeve body 21, and the workpiece is rotated. The limit pin 22 will also move accordingly, driving the inner sleeve body 21 to rotate. During the process of the limit pin 22 rotating from the receiving area 113 to the abutting area 112, it will be squeezed by the hole wall of the receiving cavity 111 and move along its radial direction. The limit pin 22 will also squeeze the workpiece, thereby locking the rod-shaped workpiece.

[0076] Furthermore, the claws 212 can be formed by welding, or can be directly formed by opening a notch (clamping groove 211) at one end of the sleeve.

[0077] As Figures 1 to 4As shown, the accommodating cavity 111 of the outer sleeve 1 has a mating cavity section 115 that decreases in the direction from the cavity bottom to the insertion hole 123. Along the extending direction of the central axis, the cross-section of the inner sleeve body 21 increases in the direction from the cavity bottom to the insertion hole 123, and the cross-section of the limiting pin 22 decreases in the direction from the cavity bottom to the insertion hole 123.

[0078] For the rod locking handle 100 according to Embodiment 1 of the present invention, by making the cross-section of the inner sleeve body 21 increase in the direction from the cavity bottom to the insertion hole 123, it is suitable for inserting rod-shaped workpieces with different diameters. Due to the different diameters of the rod-shaped workpieces, the depth of insertion into the inner sleeve body 21 is also different. Therefore, this locking handle can lock rod-shaped workpieces of multiple specifications (diameters). Thereby, the applicability of the locking handle is improved.

[0079] In addition, the accommodating cavity 111 of the outer sleeve 1 has a mating cavity section 115 that decreases in the direction from the cavity bottom to the insertion hole 123, and the cross-section of the limiting pin 22 decreases in the direction from the cavity bottom to the insertion hole 123. Thereby, the contact area between the limiting pin 22 and the outer sleeve 1 can be increased, and further the locking stability is improved.

[0080] Optionally, the abutting area 112 and the receiving area 113 are smoothly provided with anti-slip walls. The distance between the anti-slip wall and the central axis is c, and b > c > a. Thereby, the anti-slip wall can perform a certain limit on the inner sleeve 2, avoiding the problem that the inner sleeve 2 is difficult to maintain and is prone to deviation from the receiving area 113 due to the smoothness of the wall surface when not under force, and improving the structural stability.

[0081] Embodiment 1 of the present invention is not limited to this. For example, in other embodiments, the abutting area 112 and the receiving area 113 are smoothly connected. Thereby, the smoothness of the transition is improved.

[0082] Embodiment 2:

[0083] The following refers to Figure 11 and Figure 21 shown, and describes the rod locking handle 100 of another specific Embodiment 2 of the present invention.

[0084] As Figures 13 to 14As shown in the figure, in the rod locking handle 100 of Embodiment 2 of the present invention, the mating cavity section 115 includes a second section 1152 and a first section 1151 that are coaxially arranged in the direction from the cavity bottom to the insertion hole 123. Moreover, the cross-section of the first section 1151 is larger than that of the second section 1152 to form a step surface between the first section 1151 and the second section 1152. The distance from the outer contour of the clamping portion of the inner sleeve 2 to the central axis increases in the direction from the cavity bottom to the insertion hole 123. In the locked state, the outer wall surface of the clamping portion of the inner sleeve 2 can be in contact with the contact area 112 of the first section 1151 and / or the second section 1152. It can be understood that, according to the depth of insertion of the rod 200 into the inner sleeve 2, the clamping portion can be in contact with at least one of the first section 1151 and the second section 1152. If the diameter of the rod 200 is relatively large, the clamping portion of the inner sleeve 2 can only be in contact with the first section 1151; if the diameter of the rod 200 is relatively small, the clamping portion of the inner sleeve 2 can only be in contact with the second section 1152. Moreover, if the rod 200 is divided into different diameter segments, it is also possible to make the clamping portion be in contact with both the first section 1151 and the second section 1152.

[0085] For the rod locking handle 100 of Embodiment 2 of the present invention, by sequentially dividing the mating cavity section 115 from the cavity bottom to the insertion hole 123 into a second section 1152 and a first section 1151 that are coaxially arranged, it is suitable for inserting rod-shaped workpieces with different diameters. Since the diameters of the rod-shaped products are different and the steps inserted into the inner sleeve 2 are different, this locking structure can lock rod-shaped products of multiple specifications (diameters).

[0086] Moreover, in the rod locking handle 100 of Embodiment 2 of the present invention, the mating cavity section 115 of the outer sleeve 11 is not limited to being provided with the first section 1151 and the second section 1152. According to the number of specifications of the locked rod, the number of steps of the inner sleeve 2 is correspondingly increased.

[0087] Furthermore, the cross-sections of both the second section 1152 and the first section 1151 can be polygonal, and the corner portions of the second section 1152 and the corner portions of the first section 1151 are arranged in one-to-one correspondence, and the side portions of the second section 1152 and the side portions of the first section 1151 are arranged in one-to-one correspondence.

[0088] Such as Figures 17 to 19As shown, the accommodating cavity 111 of the outer sleeve 1 has a mating cavity section 115. The mating cavity section 115 includes a first sub-section 1151 and a second sub-section 1152 which are coaxially arranged. The inner sleeve body 21 includes a first sleeve body section and a second sleeve body section. Claw 212 is provided on the first sleeve body section and the second sleeve body section. The cross-section of the first sub-section 1151 is larger than that of the second sub-section 1152, and the cross-section of the first sleeve body section is larger than that of the second sleeve body section. The limit pin 22 includes a separately provided first pin body and a second pin body. The first pin body is stuck in the card slot 211 of the first sleeve body section, and the second pin body is stuck in the card slot 211 of the second sleeve body section.

[0089] For the rod locking handle 100 of Embodiment 2 of the present invention, by dividing the limit pin 22 into a separately provided first pin body and a second pin body, it can cooperate with the stepped setting of the mating cavity section 115, thereby realizing the locking of rods with different diameters.

[0090] Figures 11 to 21 As shown in Embodiment 2 of the present invention, Figures 1 to 10 The rest of Embodiment 1 shown can be the same, which will not be elaborated here.

[0091] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0092] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0093] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0094] In the present invention, unless otherwise clearly defined or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0095] In the present invention, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0096] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A rod locking handle, characterized in that: The rod locking handle has a locking state and an unlocking state that can be converted into each other. The rod locking handle includes an outer sleeve and an inner sleeve. The outer sleeve has a accommodating cavity and an insertion hole for the rod to penetrate. The inner sleeve is rotatably arranged in the accommodating cavity along its central axis. The hole wall of the accommodating cavity includes an abutment area and a receiving area arranged in sequence along the circumference of the accommodating cavity. The distance between the abutment area and the central axis is a, and the distance between the receiving area and the central axis is b, and a is smaller than b; the inner sleeve has a clamping portion for clamping the rod. In the locking state, the inner sleeve abuts against the abutment area and can clamp the rod. In the unlocking state, the inner sleeve corresponds to the receiving area in the radial direction of the accommodating cavity and can unlock the rod.

2. The rod locking handle according to claim 1, characterized in that: The outer sleeve comprises an outer sleeve body and a plug body, the outer sleeve body has an opening communicating with the accommodating cavity, the plug body is detachably arranged on the opening, the inner wall surface of the outer sleeve body has the abutment area and the receiving area, the plug body is provided with the insertion hole, and the inner sleeve is limited in the accommodating cavity through the plug body; And / or, the inner sleeve is made of polytetrafluoroethylene.

3. The rod locking handle according to claim 2, characterized in that: The accommodating cavity of the outer shell is divided into a blocking cavity section and a matching cavity section along the extension direction of the central axis, and the projection of the inner contour of the matching cavity section falls within the projection of the inner contour of the blocking cavity section, the plug body is blocked in the blocking cavity section, the clamping portion is arranged in the matching cavity section, and the abutment area and the receiving area are formed on the inner wall surface of the matching cavity section.

4. The rod locking handle according to claim 3, characterized in that: The cross section of the matching cavity section decreases from the cavity bottom to the insertion hole, and the distance from the outer wall surface of the clamping portion of the inner sleeve to the central axis decreases from the cavity bottom to the insertion hole. In the locked state, the outer wall surface of the clamping portion of the inner sleeve can abut against the abutment area of ​​the matching cavity section; Or, the mating cavity section includes a coaxially arranged second segment and a first segment in sequence from the cavity bottom to the insertion hole, and the cross-section of the first segment is larger than the cross-section of the second segment to form a step surface between the first segment and the second segment, and the distance from the outer contour of the clamping portion of the inner sleeve to the center axis increases from the cavity bottom to the insertion hole, and in the locked state, the outer wall surface of the clamping portion of the inner sleeve can abut against the abutment area of ​​the first segment and / or the second segment.

5. The rod locking handle according to claim 3, characterized in that: The cross section of the matching cavity section is polygonal, the angle portion of each matching cavity section forms the receiving area, and the edge portion of each matching cavity section forms the abutment area.

6. The rod locking handle according to claim 2, characterized in that: The cross section of the insertion hole is smaller than the cross section of the accommodating cavity, a step is formed between the insertion hole and the accommodating cavity, and one end of the inner sleeve abuts against the plug body; Alternatively, a limiting protrusion extending toward the inside of the hole is provided on the inner wall surface of the insertion hole, and along the extension direction of the central axis, the projection of the limiting protrusion overlaps with the projection of the inner sleeve, and one end of the inner sleeve abuts against the limiting protrusion.

7. The rod locking handle according to claim 6, characterized in that: The plug body includes a cover body portion and a plug body portion formed on one side of the cover body portion, the plug body portion extends along the thickness direction of the cover body portion, the cover body portion abuts against the open end of the outer shell body, the plug body portion is detachably connected to the wall surface of the accommodating cavity, and the insertion hole is formed on the cover body portion and the plug body portion.

8. The rod locking handle according to claim 1, characterized in that: The inner sleeve includes an inner sleeve body and a limit pin, the inner sleeve body is provided with a slot, the inner sleeve body has a section of the slot forming the clamping portion, the limit pin is rotatably clamped in the slot, and a part of the limit pin radially protrudes out of the inner sleeve body, the clamping portion is formed on the inner sleeve body, and the limit pin is switchably abutted against the abutment area and the receiving area so that the rod body locking handle can be transformed between the locked state and the unlocked state.

9. The rod locking handle according to claim 8, characterized in that: The inner sleeve body includes a sleeve and a plurality of spaced claws arranged at one end of the sleeve, the area between the plurality of claws forms the clamping portion, the slot is formed between two adjacent claws, and the limit pin is movably clamped in the slot along the radial direction of the inner sleeve.

10. The rod locking handle according to claim 9, characterized in that: The accommodating cavity of the outer sleeve has a matching cavity section that decreases in the direction from the cavity bottom to the insertion hole, and along the extension direction of the central axis, the cross section of the inner sleeve increases in the direction from the cavity bottom to the insertion hole, and the cross section of the stop pin decreases in the direction from the cavity bottom to the insertion hole; Or, the accommodating cavity of the outer sleeve has a matching cavity section, the matching cavity section includes a first segment and a second segment coaxially arranged, the inner sleeve body includes a first sleeve body segment and a second sleeve body segment, the first sleeve body segment and the second sleeve body segment have the claws, the cross-section of the first segment is larger than the cross-section of the second segment, the cross-section of the first sleeve body segment is larger than the cross-section of the second sleeve body segment, the limiting pin includes a first pin body and a second pin body separately arranged, the first pin body is clamped in the clamping groove of the first sleeve body segment, and the second pin body is clamped in the clamping groove of the second sleeve body segment.

11. The rod locking handle according to any one of claims 1 to 10, characterized in that: The abutment area and the receiving area are smoothly provided with anti-slip walls, and the distance between the anti-slip wall and the central axis is c, b>c>a; Alternatively, the abutment area and the receiving area are smoothly connected.

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